36 results about "Toxic pollution" patented technology

The invention discloses antifouling paint as well as a preparation method and application thereof, and belongs to the technical field of functional paint. The coating is prepared from a light-cured polyurethane prepolymer, modified silicon dioxide, a slow-release antifouling microcapsule and a low-surface-energy modifier. The preparation method comprises the following steps: synthesizing acrylated rosin dihydric alcohol, preparing a light-cured polyurethane prepolymer, mixing all the components, spraying, and carrying out ultraviolet curing. The obtained coating has super-hydrophobic, self-repairing and intelligent antifouling functions, is stable in performance in extreme environments such as salt mist, acid-base, ultraviolet aging and mechanical wear, and is suitable for marine equipment such as culture netting and ships. The invention solves the technical problems of toxic pollution and short service life of the traditional antifouling paint, and has obvious environmental friendliness and economic benefit.

The invention relates to the technical field of microorganisms, in particular to application of paraclostridium benzene to promotion of degradation of methyl mercury. The preservation number of the paraclostridium behenolyticum is KCTC (Korean Center of Type Culture Collection) 15476 or LMG (Leukocyte Molecular Growth) 28745, and the preservation number of the paraclostridium behenolyticum is KCTC 15476. The invention discloses the capability of degrading the toxic pollutant methyl mercury of the paraclostridium behenoelyticum for the first time, and the paraclostridium behenoelyticum has important significance for deeply knowing the form transformation effect of microorganisms on mercury, understanding the biogeochemical cycle of mercury and repairing and treating microorganisms polluted by methyl mercury in the environment.

The invention belongs to the technical field of semiconductor precision manufacturing, and discloses micro-nano powder wafer non-traditional machining equipment which comprises a sand blasting machining structure, a sand path and gas path structure, a sand returning and storing structure and a tail gas treatment structure. The sand path and gas path structure comprises a sand path group, a gas path group and an exhaust fan; the gas circuit group is arranged in the sand blasting processing structure and is communicated with the exhaust fan; one end of the gas circuit group is communicated with the exhaust fan, and the other end of the gas circuit group is communicated with the top of the sand returning and storing structure; and the tail gas treatment structure is communicated with the sand returning and storing structure. According to the micro-nano powder wafer non-traditional machining equipment, the problems of toxic pollutant treatment caused by wet etching, low laser machining efficiency and the like are solved.

An interfacial plasmonic heating intensified IP reaction (IPH-IP) is used to fabricate highly permeable and selective polyamide RO membranes. Silver nanoparticles (AgNPs) are introduced to the IP reaction interface to serve as nano-heat generators under light illumination. The coupling of generated nano-heat rapidly promotes the interfacial temperature, thereby boosting the formation of extensively “nano-foamed” polyamide with prominent nanovoids and high crosslinking degree. These features enable the resulting RO membrane to achieve a superior combination of water permeance (3.4 L m−2 h−1 bar−1) and NaCl rejection (99.7%). This outstanding separation performance further enables the membrane to efficiently remove a wide spectrum of toxic contaminants frequently found in different water sources, revealing huge potential for various water treatment applications. In addition, the resulting RO membrane demonstrates efficient desalination of real seawater, producing clean water with high quality that far exceeds those of benchmarking commercial membranes.

The invention discloses a method for removing toxic pollutants in metal chromium smelting waste slag, and relates to a method for removing toxic pollutants in smelting waste slag, which comprises the following steps of: firstly, crushing and sieving the smelting slag, and detecting that hexavalent chromium is dangerous solid waste according to the technical specification requirements of chromium slag pollution abatement and environmental protection; and adding a carbon, calcium, magnesium and aluminum mixed reducing agent, uniformly mixing by using a mixer, adding a binding agent, calcining in a roasting furnace, cooling, and detecting according to chromium slag pollution abatement and environmental protection technical specifications. According to the method, the chromium metal smelting slag is subjected to detoxification treatment, hexavalent chromium is reduced into trivalent chromium, the standard requirement of the chromium slag pollution abatement environmental protection technical specification (temporary) (HJ / T301-2007) is met, the limit values of total chromium in a leaching solution are smaller than 9 mg / L, hexavalent chromium is smaller than 3 mg / L, barium is smaller than 50 mg / L, and the chromium metal smelting slag is converted into common solid waste from dangerous solid waste.

The invention relates to the field of microorganisms, and discloses a stress-resistant heterotrophic nitrification-aerobic denitrification nitrogen removal bacterium and application thereof. The pseudomonas is named as H1, the microorganism classification name of the pseudomonas is Pseudomonas sihuiensis, the preservation number of the pseudomonas is CGMCC (China General Microbiological Culture Collection Center) NO: 33481, the preservation date of the pseudomonas is January 20, 2025, and the preservation place of the pseudomonas is China General Microbiological Culture Collection Center. The pseudomonas H1 disclosed by the invention can still realize efficient denitrification in a heterotrophic nitrification-aerobic denitrification way in a high-salt and high-nitrogen water body environment containing toxic pollutants with benzene ring functional groups, so that the pseudomonas H1 has great application potential in biological treatment of nitrogen-containing wastewater.

The invention discloses a waste gas treatment system and process for POE alcohol production. The waste gas treatment system comprises a gas-water separation tank, a homogenization tank, a water washing tower, a Fenton oxidation reactor, an activated carbon adsorption tower, a water absorption tower, a catalytic oxidation reactor and an alkaline washing tower which are sequentially connected through pipelines. The method has the advantages that dust, acid gas, VOCs and trace toxic pollutants in the POE alcohol production waste gas are efficiently removed through a multi-stage cooperative treatment process, meanwhile, the operation cost is reduced, and secondary pollution is avoided.

The invention relates to the technical field of sewage treatment, and particularly discloses an urban sewage treatment system and process, the urban sewage treatment system comprises an anaerobic tank, an aerobic tank and a secondary sedimentation tank, and further comprises an electrolysis mechanism, the electrolysis mechanism comprises an electrolysis tank, an electrolysis positive electrode, an electrolysis negative electrode, a supporting unit, a mounting plate, a connecting plate and a cleaning unit, and the supporting unit is fixedly connected with the electrolysis tank; the connecting plate is fixedly connected with the supporting unit, the mounting plate is fixedly connected with the connecting plate, the electrolysis positive electrode is fixedly connected with the mounting plate, the electrolysis negative electrode is fixedly connected with the mounting plate, and the two cleaning units are matched with the corresponding electrolysis positive electrode and the electrolysis negative electrode respectively. The sewage treatment device can sequentially perform anaerobic treatment, aerobic treatment, precipitation treatment and electrolytic treatment on sewage, effectively removes organic pollutants, heavy metal ions and toxic pollutants, improves the sewage treatment capacity, and has the advantages of high efficiency and environmental protection.

The invention discloses application of electrochemical active bacteria sensitive to polycyclic aromatic hydrocarbon pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.The water quality biotoxicity of toxic pollutants is measured according to the electric signal inhibition rate of bacteria liquid of the electrochemical active bacteria; the electrochemical active bacteria are azospirillum, specifically azospirillum brazilianum. The novel water quality biotoxicity detection technology based on the electrochemical active bacteria can directly convert the toxicity into an electric signal, is expected to improve the sensitivity of measuring the biotoxicity of the polycyclic aromatic hydrocarbon pollutants, overcomes the application bottleneck of low sensitivity, and provides technical support for biotoxicity monitoring work in China.

The invention provides a preparation method of an M-type barium ferrite single crystal, which comprises the following steps: S1, weighing raw materials BaCO3 and Fe2O3, mixing the raw materials to obtain a primary mixture, and mixing the primary mixture with a fluxing agent LiF-NaF-B2O3 to obtain a mixed raw material, s2, the mixed raw materials are put into a platinum crucible, the temperature is increased to 1200-1270 DEG C, and then heat preservation is conducted; s3, the platinum crucible is cooled to 1100-1150 DEG C, and then a tilt part is inserted; 001gt, 001gt; an oriented seed crystal; s4, continuously cooling, and rotating the seed crystal; s5, after the platinum crucible is cooled to 970-1000 DEG C, crystal growth is finished; and S6, lifting the crystal away from the liquid level, and carrying out annealing treatment to obtain the M-type barium ferrite single crystal. The problems of small crystal size, toxic pollution and microwave performance degradation in the prior art are solved, and size bottleneck breakthrough, pollution-free process, component stability control and microwave performance optimization are realized.

A kind of sulfur cycle multistage anaerobic device for treating landfill leachate, it relates to municipal solid waste treatment technical field.To solve the existing primary leachate treatment, mainly aerobic treatment combined with chemical and physical treatment, aerobic treatment mechanism mainly consists of microorganism through aeration degradation of pollutants in leachate, but still insufficient to remove toxic pollutants in water, thereby leading to poor pollutant removal effect Problem.At least four box bodies are fixedly connected in turn two by two along the horizontal direction, and the inside top surface of each box body is provided with an anaerobic baffle, one side of the anaerobic baffle is provided with a baffle, the end surface of the baffle is fixedly connected with the inner wall of the box body, the top end gas outlet of each box body is provided with a gas outlet valve, the inside bottom end of the box body is provided with a heater and a temperature sensor, and the outside end surface of the outermost two box bodies is respectively provided with a liquid inlet, and an inlet valve is arranged on the liquid inlet. The utility model is suitable for effectively treating landfill leachate.

The invention discloses a black spherical silica and a preparation method thereof. The method uses a spherical organic silicone material as a raw material, firstly performs a pretreatment by impregnation in an unsaturated alcohol, and then adopts a two-stage gradient temperature rise calcination. The spherical silica prepared by the method of the invention can simultaneously achieve the contradictory unity of insulation and black characteristics, and prepares black core-shell spherical silica with low L*, a*, and b* values ​​and high carbon content. The hydroxyl groups on the surface of the spherical silica are condensed and the organic matter is carbonized by calcination to achieve the characteristics of insulation and low whiteness, solve the problem of large toxic pollution of black pigments in electronic materials, and meet the requirements of electronic substrate materials such as copper clad laminates for insulation performance and low whiteness.

Poly arid perfluoroalkyl substances (PFAS) are toxic, ubiquitous contaminants in the environment along with drinking and waste water systems. Current treatment approaches struggle to effectively treat PEAS molecules without generating large amounts of toxic waste or requiring large energy and / or material inputs. With addition of alcohol such as decanol alone, PFAS such as water-soluble perfluorooctanoic acid (PFOA), can be transformed into a water-insoluble, fluorinated ester(s) that precipitate out of solution, facilitating self-removal. Highly hydrophobic fluorinated tails allow for esterification to proceed in water without the addition of any surfactant.

The invention discloses a gallium-indium-tin alloy negative pressure vacuum filling system, and belongs to the technical field of precise instrument manufacturing. The system comprises an alloy preparation unit, a vacuum generation unit, a filling control unit, a quality monitoring unit, a waste gas treatment unit and a central control system. Alloy oxidation is prevented through full-process inert gas protection, bubble-free precise filling is realized by adopting a multi-stage vacuum and self-adaptive negative pressure control strategy, and the filling consistency and reliability are ensured by integrating multi-sensor quality monitoring. The system effectively solves the toxic pollution problem of traditional mercury filling, overcomes the filling problems that gallium-indium-tin alloy is high in viscosity and prone to oxidation, is mainly applied to mercury-free manufacturing of precision instruments such as pressure sensors and medical instruments, and has the advantages of being high in precision, high in safety, environmentally friendly, high in adaptability and the like.

The invention discloses application of electrochemical active bacteria sensitive to organochlorine pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.After a bacteria solution of the electrochemical active bacteria is exposed in toxic pollutants, the water quality biotoxicity is determined according to an electric signal inhibition rate; the toxic pollutants are organic chlorine pollutants; the electrochemical active bacterium is a pseudomonas genus, and specifically, the pseudomonas genus is Pseudomonas lopnurensis or Pseudomonas delhiensis. The invention further discloses a preparation method of the electrochemical active bacterium. The method provided by the invention is expected to improve the sensitivity of determining the biotoxicity of the organic chlorine pollutants, overcome the application bottleneck of low sensitivity, and provide technical support for biotoxicity monitoring work.

The invention discloses a micro microbial fuel cell sensor based on a micro electro mechanical system and a micro-nano processing technology and a data processing method of the micro microbial fuel cell sensor. The core function of the microbial fuel cell sensor is based on a sensor consisting of an electrode anode, an electrode cathode, a gasket and an ion exchange membrane; when the anode of the sensor is in contact with heavy metal ions or other toxic pollutants, the biological activity of part of electrode microorganisms is inhibited, and electrons cannot be transferred, so that the output current is reduced; the concentration of metal ions or other toxic pollutants can be quantified by monitoring the current inhibition percentage; the response time of the sensor is very short, and real-time detection of heavy metal ions and other pollutants in a water body can be effectively realized. Meanwhile, the output current of the microbial fuel cell sensor is processed by adopting a deep learning method, so that identification and classification of heavy metal ions and other pollutants can be realized, and selective detection of species by the sensor is effectively realized.

The invention discloses a preparation method of a nitrogen-carbon composite hardened layer on the surface of austenitic stainless steel and a workpiece, and belongs to the technical field of chemical heat treatment.The preparation method comprises the following steps that the austenitic stainless steel is subjected to solid solution heat treatment, and the workpiece is machined; the workpiece is loaded into a controlled atmosphere nitrocarburizing furnace, and air in the furnace is exhausted; continuously heating, and sequentially carrying out the following operations: injecting ammonia gas into the nitrocarburizing furnace; the nitriding surface of the workpiece is purified and activated; performing high-temperature activation on the surfaces of the workpiece and the sample; performing nitrogen-carbon low-temperature infiltration; according to the method, the problem of highly toxic pollution of a traditional liquid method and the limitation of overall treatment are overcome.

The invention discloses application of electrochemical active bacteria sensitive to benzene series pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.The water quality biotoxicity of toxic pollutants is measured according to the electric signal inhibition rate of bacteria liquid of the electrochemical active bacteria; the toxic pollutants are benzene series pollutants; the electrochemical active bacteria are toxobacter, specifically, the toxobacter pacificus. The method provided by the invention is relatively simple and convenient in overall operation, can quickly obtain a detection result under the condition of reasonably controlling time and conditions, can timely and effectively evaluate the biotoxicity condition of the water body polluted by the benzene series pollutants, provides a powerful basis for environmental protection, water resource management and related pollution abatement decisions, and has a wide application prospect. And the method has relatively high practicability and application prospects.

The application is a kind of ecological water permeable brick for recycling construction waste and a preparation method thereof, the ecological water permeable brick is made of the following raw materials by weight: 450-500 parts of waste glass aggregate, 200-250 parts of dewatered municipal sludge, 75-125 parts of iron tailings powder, 75 parts of water, 26 parts of pore forming agent, 1-3 parts of nano calcium carbonate and 1-3 parts of nano titanium dioxide. The solid waste is processed into ecological water permeable brick through harmless and resourceful treatment, thereby improving the utilization rate of solid waste; the nano titanium dioxide has self-cleaning effect under light, can oxidize toxic pollutants in the air into inorganic substances such as CO2 and H2O, has the advantages of fast decomposition speed, high removal rate and the like, and has certain environmental protection advantages; the waste glass is used as aggregate to absorb solid waste, at the same time, the light absorption of the water permeable brick is increased, the use amount of nano titanium dioxide is reduced under the same effect condition, and certain economic advantages are achieved.

The invention discloses application of electrochemical active bacteria sensitive to benzene series pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.The water quality biotoxicity of toxic pollutants is measured according to the electric signal inhibition rate of bacteria liquid of the electrochemical active bacteria; the toxic pollutants are benzene series pollutants; the electrochemical active bacteria are toxobacter, specifically, the toxobacter pacificus. The method provided by the invention is relatively simple and convenient in overall operation, can quickly obtain a detection result under the condition of reasonably controlling time and conditions, can timely and effectively evaluate the biotoxicity condition of the water body polluted by the benzene series pollutants, provides a powerful basis for environmental protection, water resource management and related pollution abatement decisions, and has a wide application prospect. And the method has relatively high practicability and application prospects.

The utility model belongs to the field of catalytic degradation of toxic pollutants, and particularly relates to a non-toxic treatment device for a decommissioned chemical protection carbon material. The non-toxic treatment device for the retired protective carbon material comprises a gas source, an air purifier, a desorption pretreatment system, a gas catalytic reaction system, a tail gas absorption device, a tail gas detection device and a terminal controller, the tail gas detection device comprises a first tail gas detection device and a second tail gas detection device. Compared with throwing in deep sea and deep burying, the risk of atmosphere, water quality and land pollution caused by secondary release of toxic pollutants can be avoided by using the device. Compared with an existing incineration mode, the device can achieve non-toxic treatment on toxic substances at the low temperature, and has the advantages of being low in temperature, efficient, low in energy consumption and high in safety coefficient. By using the device, a protective carbon material can not be damaged, toxic pollutants can be thoroughly damaged, and a carbon-based carrier and active components loaded on the carbon-based carrier can be recycled for secondary utilization.

The invention discloses application of electrochemical active bacteria sensitive to heavy metal pollutants in detection of water quality biotoxicity, and belongs to the technical field of water quality biotoxicity detection.After the electrochemical active bacteria are exposed to toxic pollutants, the water quality biotoxicity is determined according to an electric signal inhibition rate; the toxic pollutants are heavy metal pollutants; the electrochemical active bacteria are enterobacter aerogenes or enterobacter cloacae and are selected from enterobacter. The electrochemical active bacteria sensitive to the heavy metal pollutants are used, so that the sensitivity of determining the biotoxicity of the heavy metal pollutants is expected to be improved, the application bottleneck of low sensitivity is overcome, and a technical support is provided for biotoxicity monitoring work in China.

The invention discloses a waste gas treatment method for a waste lithium battery recovery process, which comprises the following steps: S1, dust removal pretreatment: collecting composite waste gas through negative pressure suction, and carrying out filtering dust removal treatment on the composite waste gas to obtain pretreated waste gas after dust removal; s2, fractional condensation recovery: performing multi-stage gradient condensation treatment on the pretreated waste gas to recover the organic solvent in the pretreated waste gas and obtain residual non-condensable tail gas; s3, high-temperature oxidative decomposition: performing high-temperature oxidation treatment on the non-condensable tail gas to oxidize residual organic matters in the non-condensable tail gas and obtain high-temperature flue gas containing fluoride and phosphide; and S4, quenching and absorbing: carrying out quenching cooling treatment on the high-temperature flue gas so as to remove acidic components in the high-temperature flue gas. The method provided by the invention realizes efficient resource recovery of the organic solvent and near-zero emission of toxic pollutants, and has the advantages of low energy consumption, high safety, no secondary pollution and the like.

The present invention relates to a system and method for lowering the toxic pollutants from emissions containing molecular filter media compositions and methods of production. The filter media provides air purification by absorbing the effluents from the emission and then repurposing the contaminants through chemical interaction on the surface of the filter media and the regenerant. The adsorbent composition of the filter media maintains its integrity at high process temperature.

The invention discloses pollutant treatment equipment in the field of pollutant treatment equipment, the pollutant treatment equipment comprises a shell structure and a monitoring structure, the shell structure comprises an outer shell with meshes, and a filtering and adsorbing assembly is arranged in an inner cavity of the outer shell; the filtration and adsorption assembly comprises a reaction filter element and an electromagnetic field structure applied to the reaction filter element, and the reaction filter element is prepared from a catalytic material with an adsorption function and a gelling active material; the monitoring mechanism comprises a micro sensor assembly and a signal receiving system which are electrically connected with each other, and the micro sensor assembly is used for detecting temperature, heavy metal ions and common toxic pollutants. The shell structure is blocked on a pollutant passage, so that when pollutants pass through the reaction filter element, large particulate matters can be filtered on the outer surface of the filter element, the pollutants enter the reaction filter element, and a lot of organic matters or toxic gases can be decomposed and filtered in the process due to the action of an electric field, so that pollutant purification is realized.

The invention relates to an emergency breathing device (1) for providing treated breathing air from ambient air (2) containing contaminants, in particular toxic contaminants, comprising a central body part (4) with a nose adapter (6) arranged on the outer side of the body part (4), the invention relates to a nose adapter comprising a first and a second connection (10a, 10b) on the nose side, which can be inserted substantially in a flow-tight manner into the nostrils of a person, and / or a nose mask (100), which can only be worn on the nose of the person, characterized in that a first tubular air supply and a second tubular air supply (12a, 12b) are also arranged on the main body part (4), the invention relates to a nasal adapter (6), comprising a first tubular air supply (12a) and a second tubular air supply (12b), which are fluidically connected by means of their first ends to the interior of a first and a second connection (10a, 10b) on the nasal side of the nasal adapter (6) or to the interior of a nasal mask (100), at the second end of which a first filter module (20a) can be received, a second filter module (20b) can be received at a second end of the tubular second air supply (12b), the first filter module and the second filter module each having an inlet (22a, 22b) for introducing contaminated ambient air (2) and an outlet (24a, 24b) for discharging purified ambient air (2), the outlet is in flow connection with the interior of the respective first and second tubular air supply (12a, 12b).

The utility model belongs to the field of farmland insect pest control equipment, and particularly relates to a mole cricket catching device for a deeply-buried drip irrigation farmland, which comprises a catching bin and is characterized in that the catching bin is positioned in soil and above a drip irrigation belt, a one-way valve capable of being opened towards the inner side of the catching bin is arranged on the catching bin, and the catching bin is provided with a water inlet and a water outlet. The insect trapping unit is arranged in the trapping bin, the first emission holes are formed in the trapping bin, mole crickets can be effectively trapped without toxic pollution above the drip irrigation tape, the mole crickets are prevented from biting the drip irrigation tape, and the field environment is protected.

The embodiment of the application relates to a high-salinity wastewater treatment method and a high-salinity wastewater treatment device. Through bipolar membrane electrodialysis-electrosorption treatment of wastewater, high-salinity ions in the wastewater can be effectively separated and recovered, and the concentrations of Cl ‑ , SO4 2‑ , H2PO4 ‑ , etc. are reduced. The bipolar membrane electrodialysis-electrosorption combination has a wide applicable desalination concentration range, is convenient to operate, has low operation cost, can recycle and reuse resources in the wastewater, can reduce the toxicity of the wastewater, and can reduce the interference of ions in the subsequent Fenton reaction process. Through mixing of the first mixed solution and a magnetic iron-based heterogeneous catalyst, metal ions in the wastewater are reduced and toxic pollutants are degraded through the Fenton reaction, the biodegradability of the wastewater is improved, the COD value of the wastewater is reduced, and the wastewater is low-toxic and meets the discharge standard.

The invention discloses an electrolytic plasma heat treatment method and device for an artillery barrel, and belongs to the technical field of heat treatment. The device comprises an electrolyte supply system for treatment, an electrolyte supply system for cooling, an electrolyte recovery water tank and a positioner, the position of an artillery barrel is fixed and adjusted through a positioner, electrolyte is sprayed to the inner surface of the artillery barrel through an electrolyte nozzle of an electrolyte supply system for treatment, after electrification, the electrolyte nozzle and the electrolyte on the surface to be treated form current, plasma is induced, and heating of the surface to be treated is achieved. External cooling is achieved through a spraying device of the electrolyte supply system for cooling, and supply circulation of the electrolyte is achieved through the electrolyte recycling water tank. Compared with a traditional method, the method is higher in efficiency, simpler in technological process, intelligent in control mode and good in hardening effect; the problem of highly toxic pollution of a traditional chromium plating process is solved through an electrolytic plasma heat treatment technology, and meanwhile high temperature resistance and impact resistance are provided.

Requirements for human life and industrial activities result in large inrush of toxic contaminants into aquatic ecosystems. Especially, antibiotics, dye molecules, bacteria, heavy metal ions and other organic pollutants seriously threaten the health and continuous existence of organisms. Therefore, degradation or elimination of pollutants in waste water and purification of waste water are main problems needing to be solved. Therefore, a wastewater purification technology which is low in cost, high in efficiency and easy to spread needs to be explored. The invention relates to a preparation method and application of a novel metal-doped polytetrafluoroethylene piezoelectric catalytic material, in particular to application of the novel metal-doped polytetrafluoroethylene piezoelectric catalytic material in piezoelectric catalytic reaction, and belongs to research in the field of preparation and application of star functional materials. The activity of the novel piezoelectric catalyst is activated based on ultrasonic induction, and a wide prospect is provided for wastewater purification.